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Why opening the switch cause the light bulb to go out instantly?
Wiki User
∙ 12y ago
Opening the switch in a circuit that supplies electricity to a light bulb disrupts the supply of energy, extinguishing the light on the bulb. It looks like an instant to the human eye since the speed of electrons is similar to that of light. However, it was more like a finite decay as the light bulb dies out of its brightness due to the disruption of the supply of electrons.
The analogy we can use here is similar to closing the faucet to stop the flow of water. If you can close the faucet fast enough like opening a switch, it will appear that the water went out instantly.
Wiki User
∙ 12y ago
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Why does a light stay on after switch is turned off?
Either the switch is broken or it doesn't go to that light.
What kind of simple machine is a light switch?
The simple machine in a light switch is a "lever".
Why does a light switch turn on your lights?
A light switch turns on lights because when flipped, it completes a complete circuit.
Would a light switch converts electrical energy?
No. A light switch merely allows energy to pass, or not to pass.
What is the function of switch in the circuit?
A switch simply opens a circuit, stopping the flow of electricity. For example: a simple circuit would be two wires from a battery, one of which goes to a switch, and the other goes to a light bulb. A third wire goes from the other side of the switch to the other conductor of the light bulb. With the switch closed the circuit is complete and the light goes on. Open the switch and the circuit is broken and the light goes off.
Why does a light bulb light up immediately after you turn on a switch even if the switch was a long way from the bulb?
The light will come on instantly (incandecent bulbs only), because current travels faster than the speed of light (theory).
What cause the brake light to stay on?
SWITCH
What is the meaning of turn on the light?
It means 'operate the light-switch so as to cause the light to illuminate'.
Why does dimmer switch cause ceiling light to make noise?
.
Why does the dome and door light not come on when opening driver door but works when opening the other 3 doors on a 1995 Isuzu Rodeo?
does it have a door ajar switch. if it does, may be stuck or faulty. there is no door jar switch
How do you get the dome light to turn on when opening doors of a 2004 RAV4?
there should be a 3 position switch on the light itself, ON, OFF and DOOR. Put the switch on DOOR and that should do it. If not, you may have a bad bulb.
Which adjustment might cause an electric current to flow?
Switch to a light source with a shorter wavelength.... Switch to a light source with a higher frequency
Door switch for interior light vw polo?
The door switch for the VW Polo can go bad and cause the interior light to stay on. The switch must be changed, there is no way to repair it.
What happens when the switch is open in a circuit containing wires a light bulb a switch and a battery?
When you open a switch to a light for example, you cause a break in the flow of current to the light. Opening a light switch means you are turning the light off by stopping the flow of current to it. Closing a switch means you have completed a circuit (basically a loop) and current now flows causing the light to go on. Think of electricity like water. To cause your bath tub to fill up (light on) you have to also complete the circuit by turning the tap. Now we have water flow. (current) To stop the flow of water, we want to open the circuit by turning the tap in the opposite direction causing a break in the flow of water.
What caues the tail light in the tail-brake light to burn dim when the light switch is on?
The cause of the tail light burning dim when the light switch is on could be a short in the wire or an exposed portion of wire. This can sometimes cause the bulb to lack power because the power is drawn to another area.
What could cause a light switch not to work?
water, power outage, or maybe the light bulb is broken
How do you switch off airbag and service light in 54 Renault megane?
i have a megane scenic 2004 and just discovered that i can switch off passenger airbag by a switch in the dash , which you would see when opening the drivers door. Sorry don not know about service light.
